Lateral-motion arch-bar truck.



PATENTED NOV. 10, 190a 0; H. READ.

LATERAL MOTION ARCH BAR TRUCK.

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PATENTED NOV. 10, 1903;

G. H. READ.

APPLICATION FILED APR. 9. 1903.

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Patented November 10, 1903.

CHARLES H. READ, OF PITTSBURG, PENNSYLVANIA.

LATERAL-MOTION ARCH-BAR TRUCK.

SPECIFICATION forming partof Letters Patent No. 743,558, dated November10, 1903. Application filed April 9, 1903. Serial No. 151,846. (Nomodel.)

To all whom it may concern.-

Be it known that I, CHARLES H. READ, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Lateral-Motion Arch-BarTruck, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is a side elevatiompartly in section,showing the-arrangement of the j ournalbox and arch-bars. Fig. 2 is afront elevation of the box, partly broken away. Fig. 3 is a top planview, and Figs. 4, 5, and 6 are detail views hereinafter referred to.

.My invention relates to that class of archbar trucks for railway-carswherein provision is made for lateral motion of the truck ,by means ofrollers resting on the journal-box; and the object ofthe invention is toprovide a simple and effective construction of this character which maybe applied to the existing arch-bar trucks without affecting theinterchanging of parts or the standards of the Master Oar-BuildersAssociation.

To that end it consists in placing the rollers at the side of thearch-bars, in providing a carriage resting on the side rollers and towhich the arch-bars are rigidly secured, and, further, in theconstruction and arrangement of the parts, as hereinafter more fullydescribed and claimed.

In the drawings, 2 represents the journalbox, which may be of ordinaryform except that vertically-extendin g recesses 3 3 are preferablyprovided in the outer faces of its sides to receive the bolts 4 4, ofwhich there is one at each side. The bolts 4 are preferably ofcylindrical form and are provided with integral collars 5 5 below thelower arch-bar 6 and above the tie-bar 7. These collars are preferablyflattened on their inner faces, as shown at 8 in Fig. 4, these flatfaces being shown as spaced slightly apart from the faces of therecessed portions 3,.though they may be in contact. Above the uppercollar 5 each bolt is preferably reduced in diameter in the portion 9,which extends through registering holes in the side wing 10 of thecarriage 11 and in the upper arch-bar 12 and the lower arch-bar 6 Theupper and lower ends of these bolts are screw-threaded to receive nu ts13 and locking-nuts 14.

The top of the journal-box is provided with a pair of transverse grooves15,which are preferably concave or deepest at the central transverseplane, at which point the rollers 16 normally rest. The carriage 11 isprovided on its lower side with grooves 17, similar to those on thejournal-box and at the sides of the arch-bars.

I have shown the arch-bars as seated in up per and lower registeringtransverse recesses in the carriage, and in addition to the bolts 4 thearch-bars and carriage are secured together by steeple-head bolts 18,having their lower heads countersunk within the lower arch-bar, whiletheir upper ends are provided with nuts 19. One of these bolts 18 isshown in Fig. 6.

As the inner roller-groove on the journalbox extends over the well 20for the dustguard, I preferably form this well with. a closed top, theguard being turned upside down and inserted upwardly through the openbottom of the well. The well is then closed at the bottom by a bolt 21,which prevents the dust-guard from dropping downwardly. The groove maynot extend over the well in some cases; but in most cases the carriagewould project over the well, so that in some positions of the carriagethe guard could not be withdrawn upwardly.

It will be notedthat the collars on-the bolts 4 are so spaced that theupper face of the tiebar is about one-eighth of an inch below the lowerface of the journal-box when in normal position, and at-the end of theside movement the lift caused by the rollers and the curved grooves willbring the tie-bar into contact with the lower face of the box, at whichtime the collars or enlarged parts of the bolts 4 will be at the ends ofthe side recesses in the box.

The central wing portions 10 of the carriage extend sidewise in oppositedirections between the two arch-bars, as shown in Fig. 2, and act asspacing-plates for them.

In operation the parts normally rest in the position shown in Figs. 1and 2 of the drawings, and when a side motion of the truck occurs thisside motion will be converted into a vertical motion of the truckthrough the lifting action of the rollers in the curved grooves. Theside blow will thus be taken off from the wheel-flanges, thus preventingrapid wear of the flanges and rails and breaking of the flanges. Theinclined groove will return the parts to their normal position whenrelieved from the side pressure. The amount of side motion is limited bythe rising of the tie-bar against the journal-box and by the side boltscontacting with the end walls of the box recesses, also by the stops forthe rollers and the bottom projecting stops for the tie-bar.

The advantages of my invention result largely from the placing of therollers outside of the arch-bars. This allows the archbars to be placedat the required level, according to the Master Gar-Builders st-and-.ards, and permits the device to be applied to existing arch-bar trucks.The construction is very simple, requiring only one casting, tworollers, and two bolts over the ordinary construction. Thepresentinterchangeability of parts according to Master Oar-B uildersrequirements is retained, and repairs may be easily made in case ofwreck or when the car is in the hands of other roads by taking out theside-motion device and replacing it with the standard box equipment. Incase of Y breakage or failure of'the side-motion device from any causethe arch-bars will merely sink about a quarter of an inch and will reston top of the box without resulting injury. A strong construction isafforded by reason of the rigid connection between the arch-bars and thecarriage, the carriage acting also as a spacing-block between thearch-bars in the form shown, while the two additional bolts passingthrough the arch-bars and carriage serve to meet the shearing strain ofthe archbars, which is very great and which the two side bolts are oftenunable to resist. The fiat inner face on the side-bolt collars allowsfor inaccuracy in casting, while at the same time giving a Hat face toabut against the fiat side face of the box in buffing. These collarsstrike the box near its top and bottom, where the box is strongest andbest able to withstand the blows. The construction may be used inpedestal-trucks, the rollers in this case being at the sides of the sideframe member of the truck, thus allowing the pedestaltop to be broughtdown to the required distance above the rail. The side bolts may becylindrical throughout and extend through spacing-sleeves.

Both arch-bars may be placed under the carriage or both secured on topof the carriage. The carriage may be made without recesses and may bechanged as to shape and dimensions, and many other variations may bemade in the form and arrangement of the carried on the journal-box, andspacing-bolts at the sides of the box, said bolts holding apart thelower tie-bar and the arch-bar; substantially as described.

5. An arch-bar truck havinga member secured to the arch-bars and'projecting laterally on opposite sides thereof, and rollers at thesides of the arch bar resting within grooves in said member andjournal-box top; substantially as described. 7

6. An arch-bar truck having an.end carriage with recesses to receive theends of the arch-bars, and rollers at the sides of the archbars and uponwhich the carriage rests; substantially as described.

7. An arch-bar truck having its arch-bars supported on rollers, andspacing-bolts connecting and holding apart the lower tie-bar and anarch-bar at each side of the box; substantially as described.

8. An arch-bar truck having a carriage to which the arch-bar endportions are rigidly secured, and rollers on which the carriage securedto the arch-bars by through connections, said-connections havingcountersunk lower heads within the lower arch-bars; substantially asdescribed.

12. A car-truck having its arch-bars supported upon rollers, and aspacing-bolt between the lower arch-bar and the tie-bar, said bolt beingarranged to space the tie-bar apart from the bottom of the journal-box;substantially as described.

13. An arch-bar truck having a carriage rigidly secured to the endportions of the arch-bar, spacing-bolts between the lower arch-bars andthe tie-bar, and having extensions securing the arch-bars together,rollers between the side portions of the carriage and the journal-box,and countersunk bolts extending through the carriage and the archbars;substantially as described.

14. An arch-bar truck having supporting-

